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Abstract:This project assessed the suitability of Wisconsin’s asphalt binder modification guidelines. It follows up on a previous Wisconsin Highway Research Program (WHRP) study (0092-03-13) which served as an initial step towards validating WisDOT’s asphalt binder selection criteria. The researchers identified field sites and sampled hot mix asphalt (HMA) materials. They characterized the as-built asphalt binder material properties using newly-developed test methods that focused on damage-resistance characteristics. Early-life pavement distress surveys were conducted to evaluate the ability of these test methods to quantify the effect of modified binder use on field performance.
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